Xanthoma

Definition

Xanthoma is a skin condition in which certain fats build up under the surface of the skin.

Alternative Names

Skin growths - fatty; Xanthelasma

Causes, incidence, and risk factors

Xanthomas are common, particularly among older adults and people with high blood lipids.

Xanthomas vary in size. Some are very small, while others are bigger than 3 inches in diameter. They may appear anywhere on the body, but are most often seen on the elbows, joints, tendons, knees, hands, feet, or buttocks.

They may be a sign of a medical condition that involves an increase in blood lipids. Such conditions include: